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National Instruments NI 1450 Series Wiring an Isolated Output to an External Load

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Chapter 4 Digital I/O Functionality

NI 1450 Series Compact Vision System User Manual 4-12 ni.com

Figure 4-5. Example of Connecting an Isolated Input to a Sourcing Output Device

Wiring an Isolated Output to an External Load

The digital output circuit sources current to external loads, as shown in

theexample in Figure 4-6. The maximum output current of this circuit

is100 mA.

Figure 4-6. Example of Connecting an Isolated Output to an External Load

Vcc

Sourcing

Output

Device

Viso

Current

Limiter

Ciso

NI 1450

Input

Digital Output

Viso

Ciso

Vcc

NI 1450

Load

Contents

Main Page Important Information Warranty Copyright Trademarks Patents Compliance FCC/Canada Radio Frequency Interference Compliance Determining FCC Class FCC/DOC Warnings Class A Conventions Contents Chapter 1 NI 1450 Overview Chapter 2 Setup and Configuration Chapter 3 LEDs, DIP Switches, and Connectors Chapter 4 Digital I/O Functionality Page NI 1450 Overview About the NI 1450 Series Compact Vision System Hardware Overview Figure1-1 shows the NI 1450 front panel. Figure 1-1. NI 1450 Series Compact Vision System Front Panel Available Camera Bandwidth Software Overview NI-IMAQ for IEEE 1394 Cameras Driver Software National Instruments Application Software Vision Builder for Automated Inspection LabVIEW RT with the Vision Development Module Page Setup and Configuration Required Items Hardware Software Accessories Hardware Documentation LabVIEW Real-Time Module and Vision Development Module Documents Safety Information Page Connection Overview Before Getting Started: Connecting the NI 1450 to a Network Subnet Considerations Hardware Setup Connecting a Camera and Monitor to the NI 1450 Wiring Power to the NI 1450 Connecting to a Separate Main Supply Connecting the NI 1450 to the Development Computer Vision Builder AI: Setting up the Development Computer Installing Vision Builder AI and NI-IMAQ for IEEE 1394 Cameras Configuring the IP Address and Downloading Software onto the NI 1450 Acquiring an Image in Vision Builder AI LabVIEW Real-Time with the Vision Development Module: Setting up the Development Computer Installing LabVIEW Real-Time, Vision Development Module, and NI-IMAQ for IEEE 1394 Cameras Configuring the IP Address using LabVIEW Real-Time Downloading Software onto the NI 1450 Acquiring an Image Using LabVIEW Real-Time LEDs, DIP Switches, and Connectors LED Indicators POWER OK LED STATUS LED ACT/LINK LED 100 Mbps LED DIP Switches SAFE MODE Switch IP RESET Switch NO APP Switch USER 1 Switch (LabVIEW RT Users) Connectors Power Connector Earth Ground Connection IEEE 1394 VGA Page COM1 Ethernet TRIG 0 TRIG 1 and TRIG 2 General-Purpose Digital I/O Page Page Page Digital I/O Functionality Overview TTL Inputs and Outputs Isolated Inputs and Outputs Trigger Inputs Timed Pulse Output Initiating a Timed Pulse Pulse Modes Pulse Delay Pulse Width Trigger Polarity Quadrature Encoder Product Selection Port Using ISO Input 5 as a Latch General-Purpose I/O General-Purpose Inputs General-Purpose Outputs Fault Conditions Shutdown Disabling Shutdown Mode Watchdog Overheat Considerations When Connecting the Digital I/O Wiring an Isolated Input to a Sourcing Output Device Figure 4-5. Example of Connecting an Isolated Input to a Sourcing Output Device Wiring an Isolated Output to an External Load Figure 4-6. Example of Connecting an Isolated Output to an External Load Protecting Inductive Loads Transmission Line Effects Typical System Setup Page Deployment Connecting Multiple NI 1450s Page Page A Troubleshooting Software Configuration Problems NI 1450 Does Not Appear in MAX or in Vision Builder AI Error When Configuring IP Settings for the NI 1450 Status of NI 1450 in MAX and Vision Builder AI is No Software Installed Hardware Errors POWER OK LED is Red Cannot Drive Isolated Outputs Runaway Startup Application System Displays a Missing Operating System Error at Startup LED Error Indications POWER OK LED Is Not Lit When the NI 1450 is Powered on B Specifications Power Requirements Memory Network TTL Inputs and Outputs TTL Inputs TTL Outputs Optically Isolated Inputs and Outputs Isolated (Current Sinking) Inputs Isolated (Current Sourcing) Outputs IEEE 1394 Physical Characteristics Environmental Safety Electromagnetic Compatibility CE Compliance C Technical Support and Professional Services Page Glossary Symbols A B D Page Page Page Index Numerics A B C E F G H I K L M N O Q R S T V W